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PPSC Chemistry Full Book Test MCQs With Answers
Question # 1
Which of the following is not strong electrolytes.
Choose an answer
HCl
H2SO4
HNO3
CH3COOH
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Question # 2
Which of the following techniques involves the distribution of solute between two immiscible liquid phases.
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Chromatography
Electrophoresis
Solvent extractions
Solid phase extraction
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Question # 3
Which of the following type of polymerization is used for the preparation of synthetic rubber.
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Free radical
Zingler natta
Cationic
Anionic
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Question # 4
According to Henry's Law. the mole fraction of a gas (x) dissolved in a solvent is related to the pressure of the gas.
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x = k/p
x = p/k
x = k
p = k/x
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Question # 5
As it passes into food chain, the concentration of DDT
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Remains same
Decreases
Increases
Unpredictable
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Question # 6
The ions Sc3+ , Ca2+ and K+ have same electronic configuration as that of.
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Neon
Argon
Krypton
Xenon
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Question # 7
The increase in boiling points of noble gases from He to Xe is due to the
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Decreases in ionization energy
Increases in polarizability
Increase in electron affinity
Increase in atomic volume
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Question # 8
Arrhenius concept explained
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Constant heat of neutralization
Quantitative determination of acid base strength
Catalytic property of acid
All above
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Question # 9
Which of the following elements of group 15 is a typical metal.
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P
As
Bi
Sb
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Question # 10
If the absorbed light is green the transmitted light will be
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Purple
Orange
Violet
Black
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Question # 11
Which of the following is strong adheaive.
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Epoxy resin
Melamine -formadehyde resin
Alkyd resins
Bakelite
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Question # 12
What type of inter molecular force present in nylon-66
o
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Vander wall
Hydrogen bond
Dipole -dipole interactions
Sulphide linkage
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Question # 13
Peppermint oil contains.
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Menthol
Thymol
a-pinene
Comphene
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Question # 14
Considering the elements B, Al, Mg and K , the correct order of their metallic character is.
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B > Al > Mg > K
Al > Mg > B > K
Mg > Al > K > B
K > Mg > Al > B
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Question # 15
Calcium cyanamide on treatment with steam under pressure gives NH3 and
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Calcium carbonate
Calcium hydroxide
Calcium oxide
Calcium bicarbonate
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Question # 16
The only oxidation state of alkali metals in their compounds is.
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+1
+2
-1
0
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Question # 17
The sugar present in RNA is
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D- ribose
D-Arabinose
D-Glucose
Deoxyribose
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Question # 18
How many unpaired electron are there in a strong field iron (II) octahederal compled.
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0
1
2
4
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Question # 19
Which of the following is the most stable towards heat.
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CaCO3
BaCO3
Na2CO3
MgCO3
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Question # 20
An acid base titration involves a neutralization reaction in which an acid is reacted with an equivalent amount of base The titrant is always a strong acid or base The analyte may be
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Strong acid
Strong base
Weak acid and Weak base
All above
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Question # 21
Which parameter of a chemical reaction will change with the use of a catalyst.
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Delta F, change in free energy
Delta S, change in entropy
Delta E , change in internal energy
K, the rate constant
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Question # 22
Which of tetra chloride is resistant to hydrolysis.
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CCl4
SiCl4
GeCl4
SnCl4
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Question # 23
Which of the following is most basic.
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Aniline
Benzylamine
Diphenylamine
N-methylaniline
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Question # 24
What ASTM test for shear strength is designated for plastics.
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D 732
D 790
D 695
D 638
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Question # 25
Which of the following metals form volatile carboyl with CO below 80
o
C
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Cu
Fe
CO
Ni
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Question # 26
Which is the strongest reducing agent.
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HF
HCl
HBr
HI
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Question # 27
Fluorine is.
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Powerful oxidizing agent
Most reactive element
Used as refrigerants
All of above
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Question # 28
Monel metal is a alloy of Ni which constrains Ni uptown
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50%
60%
70%
80%
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Question # 29
Which of the following characteristics of adsorption is wrong.
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Adsorptoin on solids is reversible in nature
Adsorption, in general increase with increase in temperature.
Adsorption is generally selective in nature.
Both enthalpy and entropy of adsorption are negative
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Question # 30
The total number of crystal systems and the number of Bra via is lattices are.
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7,7
7,14
14,7
14,28
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Question # 31
Which of the following exists as polymeric chains in solid state.
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Sr Cl2
Ba Cl2
MgCl2
BeCl2
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